And as an introduction to faces I have a brief film clip from Paul Ekman, who is one of the world's great scholars in the study of facial expressions.

作为对脸的简介,我播放保罗，艾克曼的短片，他是伟大的学者,对面部表情很有研究。

耶鲁公开课 - 心理学导论课程节选

I see this as a course that's an introduction to the literature of a period, to modern poetry.

我觉得，这只是一门引导性课程,引导大家关注某一时期的文学创作和现代诗歌。

耶鲁公开课 - 现代诗歌课程节选